Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 5 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2021   18:28:46   (   0.02, -75.27) (  -0.06, -75.67)   46.02                80
 05/18/2021   18:07:23   (   0.02, -75.28) (   0.97, -71.15)  471.72                80
 05/20/2021   06:31:51   (  -0.01, -75.30) (   0.23, -76.42)  127.09                80
 05/21/2021   06:10:28   (  -0.01, -75.32) (  -0.80, -71.89)  390.97                80
 05/22/2021   18:35:05   (   0.01, -75.35) (  -0.40, -77.20)  209.93                80
 05/23/2021   18:13:42   (   0.01, -75.38) (   0.64, -72.67)  308.42                80
 05/25/2021   06:38:10   (  -0.01, -75.40) (   0.57, -77.94)  289.68                80
 05/26/2021   06:16:46   (  -0.01, -75.42) (  -0.47, -73.42)  228.70                80
 05/27/2021   18:41:24   (   0.01, -75.46) (  -0.72, -78.72)  371.83                80
 05/28/2021   18:20:00   (   0.01, -75.48) (   0.32, -74.20)  146.87                80